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@ -1,5 +1,8 @@
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import warnings
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from typing import Any, Dict, List, Optional
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from langchain_core._api import deprecated
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from langchain_community.graphs.graph_document import GraphDocument
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from langchain_community.graphs.graph_store import GraphStore
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@ -58,18 +61,22 @@ class FalkorDBGraph(GraphStore):
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) -> None:
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"""Create a new FalkorDB graph wrapper instance."""
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try:
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import redis
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from redis.commands.graph import Graph
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except ImportError:
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raise ImportError(
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"Could not import redis python package. "
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"Please install it with `pip install redis`."
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self.__init_falkordb_connection(
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database, host, port, username, password, ssl
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)
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self._driver = redis.Redis(
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host=host, port=port, username=username, password=password, ssl=ssl
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)
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self._graph = Graph(self._driver, database)
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except ImportError:
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try:
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# Falls back to using the redis package just for backwards compatibility
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self.__init_redis_connection(
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database, host, port, username, password, ssl
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)
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except ImportError:
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raise ImportError(
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"Could not import falkordb python package. "
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"Please install it with `pip install falkordb`."
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)
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self.schema: str = ""
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self.structured_schema: Dict[str, Any] = {}
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@ -78,6 +85,53 @@ class FalkorDBGraph(GraphStore):
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except Exception as e:
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raise ValueError(f"Could not refresh schema. Error: {e}")
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def __init_falkordb_connection(
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self,
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database: str,
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host: str = "localhost",
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port: int = 6379,
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username: Optional[str] = None,
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password: Optional[str] = None,
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ssl: bool = False,
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) -> None:
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from falkordb import FalkorDB
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try:
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self._driver = FalkorDB(
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host=host, port=port, username=username, password=password, ssl=ssl
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)
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except Exception as e:
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raise ConnectionError(f"Failed to connect to FalkorDB: {e}")
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self._graph = self._driver.select_graph(database)
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@deprecated("0.0.31", alternative="__init_falkordb_connection")
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def __init_redis_connection(
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self,
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database: str,
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host: str = "localhost",
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port: int = 6379,
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username: Optional[str] = None,
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password: Optional[str] = None,
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ssl: bool = False,
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) -> None:
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import redis
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from redis.commands.graph import Graph
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# show deprecation warning
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warnings.warn(
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"Using the redis package is deprecated. "
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"Please use the falkordb package instead, "
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"install it with `pip install falkordb`.",
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DeprecationWarning,
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)
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self._driver = redis.Redis(
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host=host, port=port, username=username, password=password, ssl=ssl
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)
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self._graph = Graph(self._driver, database)
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@property
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def get_schema(self) -> str:
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"""Returns the schema of the FalkorDB database"""
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